In one subject (Mr. Swift) there was a marked tendency to locate
points on the same fingers. He made many mistakes about fingers _B_
and _C_ even when he reported the number correctly. When _B_ and _D_
were touched at the same time he would often call it _C_ and _D_, and
when _C_ and _D_ were given immediately afterward he seemed to notice
no difference. With various combinations he would report _C_ when _B_
was given, although _C_ had not been touched at the same time. If _B_
and _C_ were touched at the same time he could perceive them well
enough.

The next part of the research was an attempt to discover whether a
person can perceive any difference between one point and two points
which feel like one. A simple little experiment was tried with the
æsthesiometer. The subjects did not know what was being used, and were
asked to compare the relative size of two objects placed on the back
of the hand in succession. One of these objects was one knob of the
æsthesiometer and the other was two knobs near enough together to lie
within the threshold. The distance of the points was varied from 10 to
15 mm. Part of the time the one was given first and part of the time
both were given together. The one, whether given first or second, was
always given about midway between the points touched by the two. If
the subject is not told to look for some specific difference he will
not notice any difference between the two knobs and the one, and he
will say they are alike; but if he is told to give particular
attention to the size there seems to be a slight tendency to perceive
a difference. The subjects seem to feel very uncertain about their
answers, and it looks very much like guess-work, but something caused
the guesses to go more in one direction than in the other.

Two were called less than one .... 16% of the times given.